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GAR TRUCK.

No. 372,608. Patented Nov. 1, 1887.

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GAR TRUCK.

No. 372,608. Patented Nov. 1, 1887. n93) (No Model.) 8 Sheets-Sheet 4. T. ENGLISH.

GAR TRUCK.

No. 372,608. Patented Nov. 1, 1887.

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GAR TRUCK.-

No. 372,608. Patented Nov. 1, 1887.

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GAR TRUCK.

No. 372,608. ted Nov. 1, 1887.

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OAR TRUOK. No. 372,608. Patented Nov. 1, 1887.

x V Q l f -I 2 6 i: k w 1- i 1% y k m 1 III KZ$ZJEP2J fwzgioz' THOMAS ENGLISH, OF HAW'LEY, NEAR DARTFORD, COUNTY OF KENT, ENGLAND.

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 372,603, dated November 1, 1887.

Application filed April 13, 1887. Serial No. 234.726.

(No model.) Patented in England February 15, 1886, No. 2,209; in France November 25, 1586, No. 179,896; in Belgium November 27, 1956, No. 75,401, and in Germany December 3, 1886, No. 39,773.

To all whom, it mayconcern.-

Be it known that I, THOMAS ENGLISH, a citizen of England, residing at Hawley, near Dartford, in the county of Kent, England, havein vented new and useful Improvements in Bogic- Trucks for Locomotives and the Rolling-Stock of Railways, (for which I have obtained a pat ent in Great Britain, dated February 15, 1886, No. 2,209, and Belgium, dated November 27, 1886, No. 75,401; France, dated November 25, 1886, No. 179,896, and Germany, dated Decemher 3, 1886, No. 39,773,) of which the following is a specification.

My invention relates to improved means whereby a bogic-truck is caused to tend to return to its central position relatively to the rigid wheel-base of the locomotive or other vehicle after being shifted laterally when passing over a curve; For this purpose the hogie is connected to the vehicle as Iwill describe, referring to the accompanying drawings.

Figures 1 to3show one arrangement adapted for a founwheel bogie. Fig. 1 shows a longitudinal section, Fig. 2 a half plan and half sectional plan, and Fig. 3 a half end view and half transverse section. The framing a of the bogie is jointed to a radius-frame, B, which is pivoted to a perch-pin, G, in the axial line of the vehicle, such pin being, by preference, situated equidistant from the center of the rigid wheel-base and the center of the bogiewheel base. I) D are two transverse frames projecting down from the body of the engine or vehicle and carrying at their lower ends a strong horizontal shaft, E,lying in the axial line of the vehicle, on which is mounted the Ushaped link F in such manner that its eyes are capable of sliding to and fro to a slight extent along the shaft E. On the loop F of the link is mounted an eye, G, having a vertical stud or pivot, G, which takes a bearing in a socket, H, in a transverse beam, A, forming part of the hogie-frame A, which rests on springs I, carried by the axle-boxes J, that work in hornplates in the bogie-frame.

The action of the abovedescribed arrangement is as follows: The transverse frames D D transmit the load of the vehicle, through the shaft E, link F, and stud G, to the transverse frame A of the bogie, from which it is again transmitted, through the springs I, .to the axleboxcs J. hen running on a straight road, the axis of the shaft E and that of the bearing G both lie in one and the same vertical plane in the axial line of the vehicle, the bogie having thus a central position relatively to the vehicle. \Vhcn, owing to the vehicle passing onto a curve, the bogie-frame is made to move laterally (more or less) out of its central position, it follows that the bearing G, carrying the bend of the link F, also moves out of the axial plane of the vehicle, and consequently the link is made to assume a more or less inclined position. In order to enable it to do so, either the springs I must be compressed to a certain extent by the downward motion of the loop of the link, or the lower ends of the link, and with them the body of the vehicle, must rise to an cxtent cqual to the versed sine of the angle through which the link is deflected from the vertical, or both these actions will take place simultaneously. It will be seen that while the bogie is in the shifted position there will be a tendency to bring the link F back into its vertical position, either by the downward pressure exerted upon the shaft E by the frames D or by the upward pressure exerted by the springs I upon the bearer A and stud G, or by both combined, which Will tend to bring the bogie to its central position. As the lateral movement of the bearing Gwill takeplace in a circular arc whose center is at G, the link F requires to have a correspondingamount of longitudinal play upon the shaft E, as before described,in order to allow of such motion.

Figs. A to 6 show a similar arrangement to that above described applied to a two-wheeled bogie. Fig. 4 shows a longitudinal section, Fig. 5 a part plan and part sectional plan, and Fig. 6 apart end View and part transverse section. In this arrangement the link F, instead of being mounted on a pin carried by the transverse frames D, has trunnions F formed on its ends, that are carried in hearings on the frames D, and the transverse frame A, that supports the pivot or stud G, is attached to the loop K of a transverse spring, K, the ends of which bear upon thcaxle-boxesJof the wheels.

7 ment.

The construction and mode of action are otherwise the same as previously described, and need, therefore, not be further referred to.

Fig. 7 shows a longitudirial section, and Fig. 8 a part cross-section, of a modified arrangement for four-wheel bogies, in which the link F is arranged in an inverted position, the two ends being fitted by eyes on the shaft E, which in this case is carried by two transverse frames, A A, of the bogie A, the body of the vehicle being provided with a transverse frame, D, carrying the socket by which it rests upon the stud or swivel G, whose eye G is carried by the loop of the link in such a manner that the latter can slide longitudinally with a small amountof playtherein. Thetransverseframes A A are bolted to the side frames, A, of the bogie, that rests upon the middles of the springs I, the ends of which are carried by the axle-boxes J, as in' the first-described arrange- The action is precisely the same as with the other arrangements.

Figs. 9 and 10 show, respectively, a longitudinal section and transverse section of a modification ofthe last-described arrangement, in which the eye G, with stud G, is dispensed with, the link F, suspended by pin E from the transverse frame A, being formed with a spherical enlargement, F, on which the transverse frame D rests with a spherical socket, H, whereby the link is enabled to turn both on its horizontal longitudinal axis and upon the vercarried at their ends by frames 1, that bear .with their ends upon the axleboxes J.

the eyes of the link F project, and other slots, D through which the pin E of the link passes. With this arrangement the eyes of the link F are made capable of sliding longitudinally upon the pin E, in order to allow for the varying relative position of the transverse frames A and D in a longitudinal direction due to the radial motion of the former upon its conheating-pin.

Having thus described the nature of my invention and the best means I know of carrying the same into practical effect, I claim- 1. In a bogie-truck,a central link of U shape free to swing transversely of the bogie, and having its lower extremityjointed to the body of the vehicle, whileits upper extremityis jointed to a frame supported by a spring or springs on the axle-boxcs, substantially as herein described.

2. In a bogie-frame, the U-shaped link F, with spherical boss F, carried by a pin, E,

mounted on a-transverse frame, A, connected to the bogie-frame A, said link F operating in combinationwith a spherical socket, H, on a transverse frame, D, connected to the body of thc'engine, substantially as herein described.

In testimony whereof I have signed my name to this specification,in the presence of two subscribing witnesses, this 11th day of March, A. D. 1887.

THOS; ENGLISH.

Witnesses:

OLIVER IMRAY, Patent Agent, 28 Southampton Buildings, Lon

don, W. O. M10. P. M. MILLARD, Clerk to llfessrs. Abel 62' Iinmy, Consulting Englneers dZPatent Agents, 28 Southampton Buildtugs, London, TV. 0. 

